Drive for paper manufacturing machines



June 29, 1943. A. VANDEN BERGH DRIVE FOR PAPER MANUFACTURING MACHINES Filed March 14, 1941 3 Sheets-Sheet l Inventor fl/freaf kg? aevr 2613 A no m e June 29, 1943- A. VANDEN BERGH DRIVE FOR PAPER MANUFACTURING MACHINES 5. Sheets-Sheet 2 J J PM Filed March 14, 1941 ////fi/ ///y///////// e /d Invehtor I w/rea we)??? fi y B1 QM Attorney Patented June 29, 1943 UNITED STATES PATENT 'OFFlCE 2,323,168 DRIVE FOR PAPER MANUFACTURING MAOHINES Alfred Vanden Bergh, Green Bay, Wis. Application March 14, 1941, Serial No. 333,433

6 Claims. (CI. 74-26) This invention relates to new and useful improvements in drives for paper manufacturing machines and more particularly to a pulp screening apparatus, which has as its principal object the provision of drive means which will eliminate rollers, cams, rubbers, toe blocks and various other elements now required and which tend to eifect some hardship on the screening apparatus diaphragm.

Another important object of the invention is to provide a drive mechanism of the character stated which will be positive acting and while simple in construction will be efllcient, durable and substantially foolproof at all times.

Other objects and'advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a fragmentary side elevational view showing the improved apparatus.

Figure 2 is a vertical sectional view taken substantially on the line 2-2 of Figure 1.

Figure 3 is a horizontal sectional view taken substantially on the line'3--3 of Figure 2,

Figure 4 is a vertical sectional view taken substantially on the line 4-4 ofFlgure 2.

Figure 5 is an enlarged detailed sectional view taken substantially on the line 5-5 of Figure 4.

Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 denotes the customary vat of a pulp screen provided with the usual diaphragm 6. Drive units making up the present invention and denoted by numeral 6 are located under the vat 5 and each consists of a box structure which may consist of a U-shaped frame 3 consisting of upstanding legs a, a and a connecting bottom b. The frame further includes a bridge piece 0 at the top, connecting the upper ends of the legs a, a and extending through this top member c is a guide bushing 9 through which a connecting rod I0 is slidable.

The box is further provided with side panels H, II suitably secured to the frame and a drive shaft l2 extends through the lower portions of these panels I I, l l of each oi the units 1.

0n the drive shaft l2 in each of the units 1 is an eccentric l3 operating in a rider I! and as shown in Figure 4, the eccentric l3 and rider H are located between a, pair of bearings l5, I! mounted on the frame bottom b.

Threaded into the upper portion of the rider It is a shank l6 having a threaded head I! threadedly engaged into one end of a socket l3.

The intermediate portion of the connecting rod I0 is threaded as at l9 and has a nut 20 thereon engageable with a plate 21 which is secured to the intermediate portion of a guide bar 22 by bolts 23. The connecting rod l0 extends downwardly below the guide bar 22 and has a ball 24 at the lower end thereof disposed in the socket l8. An attaching plate 25 connects the upper end of the connecting rod I II to the flexible diaphragm 6.

The inner sides of the leg portions :1, a of the frame are formed with guide grooves 26 receiving the ends of the guide bar 22. Rods 21, 21 extend upwardly through the bottom I) of the frame and upwardly adjacent the leg members a and pass through the end portions of the upper member a, the upper ends of the rods 21 being threaded as at'28 and provided with nuts 29 which serve to hold the upper member 0 snugly against the upper ends of the legs a. A pressure adjusting plate 30 is disposed horizontally in the upper portion of the box and has openings at the ends thereof for receiving the rods 21. Adjusting screws 3|, 3| provided with lamb nuts 32 are feedthe pressure adjusting member 30.

Located on the rod 21 and interposed between the pressure member 30 and opposed portions of the guide bar 22 are coiled compression springs 33, while located on the same rod 2'! but interposed between the bottom sides of the guide bar :2 and the bottom b are compression springs Thus it can be seen that the springs serve'to absorb shock and minimize vibration to a considerable extent.

Obviously as the drive shaft 12 operates, the shank I6 is moved upwardly, operating on the drive shaft III which moves upwardly and downwardly following the action of the cam rider ll, raising and lowering the diaphragm 8 to activate the pulp in the vat 5. Obviously, pressure on the springs 33, 34 can be controlled by adjusting the plate 30 by the screws 3 l While the above described drive mechanism is especially devised for pulp screening apparatus in paper manufacturing plants, it is to be understood that the same can be used in various kinds of machinery.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

1. A drive mechanism comprising a drive shaft, a frame structure through which the drive shaft operates, bearing means for the drive shaft and mounted on the frame, an eccentric onthe drive shaft within the frame, an endwise movable rod, an operative connection between the eccentric and said rod, a guide bar carried by said rod, said frame having guide grooves therein for receiving the ends of the guidebar, cushioning means for the guide bar, a bridge member at the upper portion of the frame, said rod being slidable through the bridge member.

2. A drive mechanism comprising a drive shaft, a frame structure through which the drive shaft operates, bearing means for the drive shaft and mounted on the frame, an eccentric on .the drive shaft within the frame, an endwis movable rod, an operative connection between the eccentric and said rod, a guide bar carried by said rod, said frame having ide grooves therein for receiving the ends of the guide bar, cushioning means for the guide bar, said cushioning means consisting of springs above and below the guide bar and impinging the same and a pressure plate for adjustable engagement against one end of certain of the springs.

3. A drive mechanism comprising a drive shaft, 8. frame structure through which the drive shaft operates, bearing means for the drive shaft and mounted on the frame, an eccentric on the drive shaft within the frame, an endwise movable rod, an operative connection between the eccentric and said rod, a guide bar carried by said rod, said frame having guide grooves therein for receiving the ends of the guide bar, and cushioning means for the guide bar, said cushioning means consisting of springs above and below the guide bar and impinging against the same and a pressure plate for adjustable engagement against one end of certain of the springs, guide rods extending through the end portions of the guide bar, said springs being located on the guide rods above and below the said guide bar, said pressure plate engaging the upper ends of the uppermost spring.

4. A drive mechanism comprising a drive shaft, a frame structure through which the drive shaft operates, bearing mean for the drive shaft and mounted on the frame, an eccentric on the drive shaft within the frame, an endwise movable rod, an operative connection between the eccentric and said rod, 1:. guide bar carried by said rod, said frame having guide grooves therein for receiving the ends of the guide bar, and cushioning means for the guide bar, said cushioning means consisting of springs above and below theguide bar, and impinging against the same and a pressure plate for adjustable engagement against one end of certain of the springs, guide rods extending through the end portions of the guide bar, said springs being located on the guide rods above and below the said guide bar, said pressure plate engaging the upper ends of the uppermost spring, and adjusting screws disposed through the upper portions of the frame and engaging the pressure p a e.

5. A drive mechanism comprising a drive shaft, a frame structure through which the drive shaft operates, bearing means for the drive shaft and mounted on the frame, an eccentric on the drive shaft within the frame, an endwise movable rod, an operative connection between the eccentric and said rod, a guide bar carried by said rod, said frame having guide grooves therein for receiving the ends of the guide bar, and cushioning means for the guide bar, said cushioning means consisting of springs above and below the guide bar and impinging against the same and a pressure plate for adjustable engagement against one end of certain of the springs, guide rods extending through the end portions of the guide bar, said springs being located on the guide rOds above and below the said guide bar, said pressure plate engaging the upper ends of the uppermost spring, said frame including a removable upper portion, said guide rods passing through the upper portion and being threaded and provided with nuts to hold the said upper portion against the frame proper.

6. In combination with the diaphragm of a pulp screening apparatus, a drive mechanism, said drive mechanism consisting of a drive shaft, an eccentric on the drive shaft, an endwise movable rod, one end of said rod being connected to the diaphragm, a ball and socket connection between said rod and the eccentric, and guide means for said rod, said guide means consisting of a frame, a guide bar having its ends slidably connected to the frame, said bar being carried by said rod, and cushioning means for the said guide bar.

ALFRED VANDEN BERGH. 

